Danfoss Compressor SZ148A4PBM

09/03/2020

Summary of technical points of mobile air compressor

The technical points of the mobile air compressor are summarized as follows: What is the reason for the abnormal increase in the first-level suction temperature? There are two reasons for 　　:

06/14/2020

Danfoss cocuses on providing energy efficient, sustainable and smart refrigeration compressors for a varied range of commercial applications such as cold rooms

08/26/2020

Features of scroll refrigeration compressor：

Advantages of scroll refrigeration compressors:<br></br> 　　1. There is no reciprocating mechanism, so the structure is simple, small in size, light in weight, few parts (especially few wearing parts), and high reliability;<br></br>

08/09/2020

Can the air conditioner compressor be repaired if it is broken How much does it cost to repair the air conditioner compressor once

We all use air conditioners now, but everyone may not know so much about the components inside the air conditioner. The air conditioner compressor is the core part of the air conditioner refrigeration system.

06/20/2020

What are the causes of air conditioning trip

What are the causes of air conditioning trip 1. The contradiction between the rated current of the air conditioner and the current carrying capacity of the wire. 　　Here are two formulas involved: 　　①The rated current of air conditioner I=P÷U ÷power factor, the power remains unchanged, the smaller the voltage, the greater the current required. 　　② The current carrying capacity of the wire I=U÷R, the voltage is proportional to the current. 　　 So when the power supply voltage is normal, we must consider the line voltage drop. The longer the line, the greater the resistance, the greater the voltage drop, and the smaller the output current at the end. However, because the power of the load remains unchanged, the voltage becomes smaller, and the current that needs to be output will be larger. At this time, the wire is forced to overload, and the time will cause heating, and eventually cause the tripping of the open circuit. 　　 Some friends said that the heat of the wire will not cause the tripping of the circuit breaker. In fact, the manufacturer of the air switch has made it clear in the relevant manuals that the heat of the wire will cause the air switch to trip. Because the wire heats up, the crimp terminal will also heat up, and the resistance will become larger and larger. The larger the resistance, the greater the current consumption, and the hotter it will be, a vicious cycle. 　　 2. Leakage 　　During the daily maintenance work, we will encounter the situation that the air circuit trips due to the leakage of electricity. At least I have not experienced it once or twice. Regardless of the leakage of the neutral line or the leakage of the live line, a long time will cause the circuit breaker to trip. 　　Why does the electric leakage cause the MCB to trip? There are two situations. 　　 ① Good grounding. At the beginning, the leakage current was not large, and as time went by, the leakage current became larger and larger, and eventually evolved into a short circuit to ground, unable to close. 　　②There is no ground wire. If the equipment is not connected to the protective ground, when the wire leaks to the equipment, it is equivalent to adding a large shunt resistance. Like this problem, if the air conditioner does not have a ground wire, when the wire leaks to the air conditioner, the air conditioner is a very large shunt resistor and will consume a lot of current. Eventually, the wire will heat up or trip open. 　　How to determine whether the trip caused by the above two aspects can be done with a clamp ammeter. 　　 ① Measure the voltage at the input and output to see if there is a significant change in voltage drop. 　　②Measure whether the output current exceeds the standard. 　　 So my suggestion is: first measure the supply voltage to see if it is within the allowable fluctuation range. Then measure the current to see if it exceeds the rated ampacity of the wire. Finally, check the data one by one according to the measured data to find out the reason.

09/05/2020

Analysis on the components of compressed air system

The compressed air system is composed of the air supply end to the air consumption end as follows: air compressor→air storage tank→filter→dryer→air pipeline→air port.

06/25/2020

Comparison of characteristics of Hitachi inverter scroll compressors for household and commercial and vehicle air conditioning

Comparison of characteristics of Hitachi inverter scroll compressors for household and commercial and vehicle air conditioning Due to the different applications, Hitachi inverter scroll compressors have different characteristics.

08/14/2020

Daily operating conditions of industrial chillers

Industrial chillers will have certain parameters for users to refer to during operation, which can be displayed through relevant instruments. It is possible to control and observe the various parameters of the industrial chiller during operation,

06/16/2020

Working principle of automobile compressor

Working principle of automobile compressor Car compressor The function of automobile compressor is to transform the low-temperature and low-pressure gas refrigerant from the evaporator into high-temperature and high-pressure gas refrigerant through comp器2䀀
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09/08/2020

Chinese screw air compressor parts prices fall but demand increases

In the early stage of China's screw air compressor market, the price of spare parts remained at a relatively high level. The subjective factors of the screw air compressor manufacturer and the objective conditions of the market are the two reasons for this phenomenon.